Zirconium Hydroxide鈥揗etal鈥揙rganic Framework Composites for Toxic Chemical Removal

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• 作者：Gregory W. Peterson ; Joseph A. Rossin ; Jared B. DeCoste ; Kato L. Killops ; Matthew Browe ; Erica Valdes ; Paulette Jones
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2013
• 出版时间：April 17, 2013
• 年：2013
• 卷：52
• 期：15
• 页码：5462-5469
• 全文大小：500K
• 年卷期：v.52,no.15(April 17, 2013)
• ISSN：1520-5045

文摘

Composite materials comprising the metal鈥搊rganic framework CuBTC (HKUST-1 or Cub>3b>(BTC)b>2b>) and zirconium hydroxide were made to develop a material capable of broad spectrum toxic chemical removal. Materials were physically mixed at varying percentages, followed by pressing into pellets to set the structure. Mixtures were confirmed using powder X-ray diffraction, attenuated total reflectance鈥揊ourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and scanning electron microscopy. Nitrogen isotherm data were collected on the composite media, followed by breakthrough testing against ammonia, cyanogen chloride, and sulfur dioxide. All samples exhibited substantial porosity. As the percentage of CuBTC increased, ammonia performance increased while sulfur dioxide removal generally decreased. Cyanogen chloride removal increased with increased CuBTC percentage under dry conditions, but failed to provide any significant removal under humid conditions. Adding triethylenediamine to the composites resulted in a substantial increase in cyanogen chloride removal capacity under humid conditions. In all, the composite structures resulted in some synergistic effects for ammonia and cyanogen chloride, with removal capacities higher than weighted averages based on performance of pure components. Data indicate that composites comprising CuBTC and zirconium hydroxide may be viable for broad spectrum toxic chemical filtration.